关于在加载根导航控制器之前显示启动画面：在加载根导航控制器之前显示启动画面 – iPhone

Display a Splash Screen Before Loading the Root Navigation Controller - iPhone

我是 iPhone 的新手。在加载 UIViewController 之前，我已经使用了一些教程，即启动画面。现在我想在我的应用程序中实现一个 NavigationController 并希望在它之前显示一个启动画面。由于我是 Iphone 新手，所以在加载根导航控制器之前，我没有获得任何教程或指南来制作启动画面。

我见过许多覆盖 Default.png 文件的方法等等。我不想实现那个。我想要一个单独的 UIView 在其中包含我的自定义图像和文本，并将该 UI 视图显示为启动画面

谁能指导我。

提前致谢

使用"self.window"首先显示启动图像。如果你简单地写"窗口"，图像将不会在第一个视图中显示和动画，因为在这种情况下图像不能直接链接到窗口。在 appdelegate.m

中编写以下代码

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- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.

MasterViewController *masterViewController = [[MasterViewController alloc] initWithNibName:@"MasterViewController" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:masterViewController];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];

UIImageView *imgv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"themes.png"]];
imgv.userInteractionEnabled = YES;
[self.navigationController.view addSubview:imgv];
//[imgv release]; If you don't use ARC, uncomment this.

[self performSelector:@selector(removeSplash:) withObject:imgv afterDelay:3.0];
[self.window addSubview:self.navigationController.view];

return YES;
}

- (void)removeSplash:(UIImageView *)imageView
{
[imageView removeFromSuperview];
}

给你，伙计。玩得开心愉快的编码....

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- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
//Add a splash screen
UIImageView *imgv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"splash.png"]];
imgv.userInteractionEnabled = YES;
[navigationController.view addSubview:imgv];
[imgv release];

[self performSelector:@selector(removeSplash:) withObject:imgv afterDelay:3.0];

[window addSubview:navigationController.view];
return YES;
}

- (void)removeSplash:(UIImageView *)imageView {
[imageView removeFromSuperview];
}